Answer
The estimated life span for a person in Canada is about 704,000 hours.
Work Step by Step
Since the average life expectancy in Canada is 80.1 years, we can estimate this to be 80 years. There are 8760 hours in one year, so we can estimate this to 8800 hours. Then, multiply 80 times 8800 and get 704,000 hours.
The actual answer (without accounting for leap years) is 701,676, Therefore, our estimate makes sense.